COMPLETE SOLUTION: Create a system of linear equations. Then, solve the system using Cramer’s rule. A concert audience of 400 people consists of adults, students, and children. The ticket prices are $40 for adults, $20 dollars for students, and $10 for children. The total amount of money taken is $10600. The number of children tickets sold is in 200 less than the number of adult and student tickets in total. How many adults, students and children are in attendance?

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